Hope you don't mind me chiming in here but I thought a little insight might be helpful.
Since August 8th when the PMA8000G began shipping, we haven't sold a single PMA8000BTi. We will still sell it if a customer wants it, but the additional $150 (MAP) for the PMA8000G, IMHO, is a small price to pay when you consider the more intuitive operation, flightmate (R), USB charger, and the better looking front panel.
Then......if you look at the additional $350 for the PMA450A, well you might understand why it is our #1 seller. The OLED provides the pilot a user interface that you will rarely ever have to refer to the Pilot's Guide. The USB-C provides an additional 5 watts over the USB charger in the PMA8000G.
But in any case, you will always get the best price/performance when getting a PS Engineering audio panel, that is exactly why we make the number of different audio panels that we do, not one audio panel fits all missions!
Note: the PMA8000G does not have Copilot as PAX.
I'd be glad to answer any questions you might have.
Thank You,
Mark Scheuer
PS Engineering, Inc.